﻿86 - PROP. A. c. SEWARD ON [Peb. 1908, 



described from the Molteno Beds as Sch. Krasseri} The leaves, 

 some of which are at least 6 centimetres long and not more than 

 1 millimetre broad, correspond exactly to those borne on Prof. Zeiller's 

 species from Tongking, which he originally described as Phylloihecci 

 indica and afterwards, from the examination of better material, 

 assigned to a new species Sc7i. Carver eiv' The opinion previously 

 expressed as to the probable identity of the South African and 

 Tongking plants receives support from the discovery of the leaf- 

 bearing specimens, and it is therefore advisable to discard the name 

 Sch. Krasseri in favour of Sch. Garrerei. 



SCHIZONEURA sp. a. (PI. Ill, flgS. 1 & 2.) 



The specimen from the Burghersdorp Beds represented in PI. Ill, 

 fig. 1, is a cast of a partly-flattened stem 5 centimetres in diameter, 

 showing part of a pith-cast with numerous internodal ribs ; sepa- 

 rated from it by 3 to 4 millimetres of rock we have an impression 

 of the external surface of the plant. The surface is smooth on one 

 part of the fossil, while on the other it is folded into ridges which pro- 

 bably do not represent original features. On the nodal line are two 

 well-defined scars, and traces of more can be seen on the folded region. 



Other examples from the Burghersdorp Beds of Burghersdorp 

 consist of portions of pith-casts, with transverse grooves marking 

 the nodal regions and branch-scars as circular depressions. The 

 ridges are, for the most part, continuous from one internode to the 

 next. Pig. 2 shows a cast from Burghersdorp, with an internode 

 7 centimetres long, characterized by very small and crowded ribs. 



Some sandstone-casts from the Stormberg Beds of Basutoland, 

 though less distinctly preserved, appear to be indistinguishable 

 from the Burghersdorp specimens. In the absence of leaves it is 

 impossible to say whether the two sets of casts are specifically 

 identical with the Molteno fossils from Dordrecht (PI. II, fig. 1) ; 

 in the narrowness of the ribs there is a close agreement, but this 

 in itself need not denote specific identity. 



SCHIZONEUEA Sp. /3. 



A somewhat different type of cast from the Stormberg Beds of 

 Basutoland is represented on a reduced scale (rather less than three- 

 quarters of the natural size) in fig. 1 (p. 87). This specimen, if 

 found in Palaeozoic rocks in Europe, would doubtless be named 

 Calamites. The middle internode has a length of 7 centimetres ; 

 the ribs vary a little in breadth, but are less numerous and broader 

 than those of Sch. Carrerei. Circular depressions on one of the 

 nodal lines indicate the position of branches. The internodal ridges 

 and grooves are in some cases continuous from one internode 

 to the next, but others exhibit a marked alternation ; the con- 

 tinuity of the ribs is more clearly seen on the reverse side of the 

 specimen. There is no indication of any infranodal canals or of 



1 Seward (03) p. 48 & pi. ix, figs. 5-6. 



- Zeiller (02) p. 137 & pis. xxxvi-xxxviii ; (82) p. 301 & pi. x, 



1-2. 



